Marking machine



May 1, 1923. 1,453,442

w. E. @HOA-rs- `MARKING MACHINE Filed April 26, 3921 4 Sheets-Sheet l IIIIIIIIIIIIIIIIM May 1, 1923"; n 1,453,442

W. E. CHOATE MARKI NG MACHINE Filed April 26 1921 4 Sheets-Sheet 2 lge,

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Invewo a VVILZZiaW/E'. C710 ae,

May l, 1923. 1,453,442

W. E. CHOATE MARKING MACHINE Filed April 26 1921 4 Sheets-Sheet 5 May l, 1923. 1,453,442

W. E. CHOATE MARKING MACHINE Filed April 25. 1921 4 SI'xeets-Sheel 4 by Q 455;

Patented May 1, 1923.

U Vlll l LriJ E WILLIAlrI E. CHOA BIIENTS, T SETTS.

Original application filed August 15, 1

" chines ott the kind adapted to makeimpressions Yfrom heated typed members or dies. rlllie present application a division oit my anlication Serial No. 115,112, tiled August lo, 1916. and is directed to'those aspects or' the iir-'Jcntion originally disclosed in that applica-tion havingmore particularly to do with the heatingolf the dies and-the control of the heating.

My invention will best be understood. by reference to the following description or" the ily.' t" machine shown by Way ot' eX- ample in the accompanyingdrawings, wherein:

Fig'. 1 is a. side elevation oi2 the. machine partly broken away;

2 is a central vertical section on an enlarged scale through the tool. carrier. the tool actuating mechanism and portion o3? the Work support;

Fig. 3 is a horizontal section taken on the line l-Jl of Fig. 2;

Fig'. lis a vieiv on an enlarged scale of the thermostat shoivn in lfigr.

Fig. 3 is a vie of the heater unit shown. partly in side elevation and partly in ver* ti .al section;

Fig. 6 is bottom view ot' the heater unit shown in Fig.

Fig'. 7 is a horizontal section on an enlarged scale showing' the temperature controlling' devices; and

Fig. 8 is a Wiring diagram.

The machine here shoivn the general type shown in my Patent 1,128,225 and has a base 9 Yfrom which rises a. hollow standard 11 having horizontal track or gruideivay 18 on which moves the head 15 which is provided with the depending` neck 17 on which is rotatably mounted the die carrier 19. An operating lever 21 may be actuated to depress the plunger 23 which in turn acts on the plunger dies 25 mounted in carrier 19 el No.

Serial A.ND, ..41SSG1GOR, BY MESNE ASSIGN- OEI-1TH? t, A JORPOILA'CION OF MASSACHU- 115,112. Divided and this application filed April No.

forcing; them out into contact with the Work on suitable Work support as 27. rlhe return movement et the lever 21 is adapted to cause the l'. a 15 to travel on the track 13, thus to provide spaces between successive letters. 'lt ivill be understood that rotative 'fnovcincnt oit the carrier 19 is adapted to bring' a selected die 25 under the plunger 23. The general construction of the machine nay be similar to that shown in my prior patent above referred to, and does not need more extended description here.

Referring;4 to Fig. 27 l will noiv more particularly describe the construction ot the carrier 19 and the means whereby the plunger cies carried thereby may be heated. fis shown in that ligure the carrier 19 comprises an annular casting` provided with a hub portion 29 revolving on the bearing formed by the depending neck 17`r and a dependingcylindrical flange 31 in which are housed the dies 25, the plungers on which the dies are torzned being provided vvith suitable springs 33 which normally withdraw them to tie p sition shovvn in Fig. 2 with the ends of the dies housed Within the flange and from which they are thrust out by the action ot the plunger The dies are hele in position preferably in the inanner more fully described in the application ot which this is a. division by means` of a top ring' 35 coc;)fe-.ratingr .vith tabs 5:37 secured to 'the plungers.

The depcndinpv flange provides an annular chamber adapted to receive an electric heating unit 'from which heat may be conducted througrh the comparatively thin Wall of the flange 31 to the die receiving' chambers therein. In the illustrative embodiment oi the invention the heating unit is adapted to rotate With the carrier and I have herein slioivn an angular member 39 adapted to (it in the cavity oir the carrier With the enfile facing that 'formed by the depending e 31 and adapted to sustain a resistance con closely adjacent the inner surface of the Sangre i. The member 39, shown in detail in Fia'. E? is preferably of pressed asbestos and may be formed With the staggered lu 113 about which the coil 41 may be looped in an undulatory path as shown7 thus providing` -tor a comparatively great length and has a con'iponen its suri'ac and ore para le tion i bridge vc' Lo move along 135 and breaks -c i lined c Y cts fit-l) and 11i. lfinen said conical portion 1,35 thrust r L resistance o1l the coil sin spring 13T rides along aid co to the other conical portion ll, shifts the bridge into engagcmeiif. contacts 109 and 11i thereby clos'. cuit. When the two contacts i all of the resiff ance coils will olt the circuit and the higrhcw for the heater will be obta'n. said bridge to close the circuit its pin (Fig. T) ma' project through the 'liront ivalof the frame into a cup casing` il hand lever M5 has one end pivotally connected to said casing1 and its opgosite tree end jecting out through an openingcasing'. This lever is noi vposition shown in Fig. 7 by conlined between the hase ol" sai said lever. Villien it is desi highest temperature ier the heater the hand lever is thrust nvvard thereby causing 'the b idg-e 10T to connect the contacts 1,09 and 11,1 as desorihed. 4is soon as i indie is released? however, the switch-s li spring* .hill Vwill promptly break the ci lhis is important because prevents :inv possibilityk of inadvertently leaving; switch shifted to complete the crciiit 'l'or raising the heater to its highest temnerature.

d to obtain t ln somecases it he desirable to ai toniatically maintain said highest t for the heater a predetermine L time Without the inconvenience o'l" nia .y

holding' the lever 145 in position to complete the circuit. To accomplish this the cui` cas-- ing 143 may he provided with a spider 15,1

therein having a boss i729 profeti:

from and eceiiingr a, pin 5.) hav adapted to engage the le vvi'h the sivitch pin., and coriiected to a I itting on said c loi may have' oi.U e i o secured to said spider: and its pA conn cted to i internal 'hess 1G o and tapped to t ie spider hos to` ihelical spring 167 majy saitL bosses, encircle the pin eri the bases of sL ptlan'ge may have projectie o racilitate manual aspi'ib thereof.

nvvard movement of the n he limited by a stop li'l on the outer wall said casing.

When it is desired to maintain the Dhu.-

svvitch closed for a'predeterininc-:l l in of tiiie the cap is rotated;l thereby scie o' the c d n same ini/ard until the ange engages said Ulli, l

the lever Y- lllheii si id pins, however*y move outi, sulicicntly the sivitch will brezil:V the coni-redini@ between contacts 109 and il l and i nit to the heater will be broken. The may have a `hanged head to engage er ard limit the outward movement the cap is screwed inward to its stop, the flock spring Will he tensioned to its fullest enter and conscciieiitiy iinnioriiatcl-v or the ca` it will tend to rotate J vire rapidly tian i :liter the spring has relaxed somewhat.. l1 (fvvcvci', when the cap is in its inward position. more oiZ the ws on the tarts 1K3 and are engaged he sprl@ 167 is Linder compression and ly Messes such threads to friction during' the initial the cip is therefore grenier novement is retarded. aus the A automatically shifted gradually out Ward to oiv thc` desired 1oredetcinine(l elfose `before the jump 1 svvitcli lli' will snap to its position shown i i; T a l break t ie ci enit to the heater. Referring 'to i`-` 7 it will be noted that the parts lli an may be separated bj: a simple Aoven :i vertical d'reiiiou viewing that iii. 'that the pin 3l front wall 122 ple niovancnl upivai'illy '.Jerring, therciorc` to that When the lamp She heater coiitrollingv atea T9 and th reti-oni a si hase of? the readily from the knob `lfilling niechanisif: Yfor the itch shovn in 'i'. vf-rll l" S conveni ntly removed repair and inserted in simple manner.

detail the particular nt of i invention shovn by Way ofi example in the accon'ipanying drawings, what 1 claim as nov.' and desire to secure hy Letters ratent shall express in the follovving claims.

1. L maritim; machine comprising an annular carrier having a cylindrical ange,

plunger dies normally housed in said flange, an angulf innilns of heat insulating material opposi the angle of the carrier 'formed by the flange and a resistance coil received between them.

2. A marking machine comprising an annular carrf having a cylin=v rical. llangc, plunger dies normally housed in said llanae, an angular annulus ot heat insulating n iterial opposing the angle of. the carrier formed by the flange and a tortnous resistance coil carried by said annulns adjacent said flange.

3. A marking machine coniprising.; an annular carrier having a cylindrical flange, plunger dies normally housed in said flange.y an annulns ol heat iggisulatingi; ma-

terial 'opposing the angle o? the carrier "formed by the flange and having staggered lugs and a resistance coil looped around. said lugs.

4. L marking machine comprising a hollow support, an annular carrier rotatable thereon and having a cylindrical plunger dies extending through id A an electric heating coil disposed adjacent said flange, conductors extending through the neck and brushes ttor the coil cooperating with said conductors.

5. A marking` machine comprising a hollow Support, an annular carrier rotatable thereon and having a cylindrical flange, plunger dies extending through said flange, an electric heating coil disposed adjacent said flange, conductors extending through the neck and having central and annular terminals and brushes for the coil cooper-- ating` with said terminals.

6. A marking machine comprising a holH low support, an annular carrier rotatable thereon, a plate secured at the end et the neck having a projecting portion to retain the carrier, tools in the carrier, aresistance coil for heating the same, conductors cxtending through the neck, terminals therefor in said plate and brushes connecting said coil to said terminals.

7. A marking machine comprising a support havinor a depending neck, a carrier rotatable thereon having a depending flange, plunger' dies in said flange, a resistance coil disposed inwardly of said flange, a heat insulating partition inwardly of the coil and a heat insulating cover :tor the carrier.

8. A marking machine comprising a hollow support. an annular carrier rotatable thereon, tools about the circumference of' the carrier, a resistance coil adjacent said tools and rotatable with the carrier, conductors leading through said neck and having brush connection with the coil.

the standard,

9. A marking machine comprising an angular carrier member and an opposed angular heat insulating member, a heating coil between them and plunger dies carried in one flange ot said carrier member.

l0. A marking machine comprising a hollow support, an annular carrier rotatable thereon and having a cylindrical flange, plunger dies in the flange, an electrical heater housed by the flange and supply conductors therefor leading through the support.

l1. A -machine having an electrically energized element, a frame providing a chamber, a trame receivable in the chamber and in which are assembled controlling elements for the current, a wall ol' said chamber having one or more operating devices for said controlling elements, said devices adapted to interfit with the parts operated thereby on insertion ot said trame in the chamber.

1Q. A machine having a Aframe including chambcred base anda hollow standard, an electrically energized element carried by conductors leading to the element through a hollow thereof, a frame receivable in the chambered base and in which are assembled controlling means for the current, a wall of said base having one or more operating devices for said controlling elements, said devices adapted to interfit with the parts operated thereby on insertion of said frame in the chamber.

13. A marking machine comprising an imprinting dieran electric coil for heating the saine, a resistance in circuit with the coil and means for short-cirmiitingr the resistance comprising a switch having means for normally holding the same open.

14. A marking machine comprising an imprinting die; an electric coil for heating' the same, a resistance in circuit with the coil and means for short-circuiting the resistance comprising a switch having automatie means for opening the same after a. determined time.

15. A marking machine comprising an imprinting die, an electric heater therefor, a rheostat in circuit with the heater. a line for short-circuiting the heater including a spring pressed bridge and a handle for holding said bridge in connecting position against its spring.

1G. A marking machine comprising an imprinting die, an electric heater therefor, a rheostat in circuit with the heater, and a delayed action switch for temporary cutting out the rheostat.

WILLIAM E. CHOATE. 

